Mosaic of Rosette Nebula (NGC2237-2238-2239-2246)
and NGC2244 Open Cluster in Monoceros
(RA 6h 32.3m , Dec. +5°03', 80 x 60 arcmin.)
This large nebula is located about 9°30' SEE of Betelgeuse and just 2° NEE of e Monocerotis (see finder chart below). It covers an area is over twice the diameter of the Full Moon and could be spoted in larger binoculars. For telescopic view, rich field instruments are prefered because of the size of this object.
The above mosaic was assembled from 12 tiles composed of 60 images taken on October 20, 1999 from Sooke, B.C. I used Celestron Ultima 8 SCT at f3.0 and Cookbook 245 LDC CCD camera. For each tile, five 60 sec. exposures were taken through infrared blocking filter and then combined using Multi245 software from Richard Berry. Individual tiles were then assembled into a mosaic using Corel PhotoPaint 8.
The above image is reduced to 50% of the original. North is up.
Map created in Guide 7.0 - 10° x 10°. North is up.
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© Jan Wisniewski